Surname Doouglas (Doouglas 
) , across the world, is an extremely rare family name. The cognomen Doouglas is habitual in Mexico, where it is an extremely rare surname, Brazil, and the United States. More prevalently, Doouglas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Doouglas | Mexico, United Kingdom, Brazil, Peru, United States |